Watts Relief Valve: FNPTF x FNPTF, 3/4 in x 3/4 in, Copper Silicon Alloy
The WATTS 3/4 LF174A 75 FS is an ASME Section XIII hot water pressure relief valve with 3/4 in x 3/4 in FNPTF connections, made of copper silicon alloy, and rated for a maximum operating pressure of 150 psi (MPN 3/4…
SKU 3G-OTH-442462
Also listed as: 34LF174A75FS · 3 4 LF174A 75 FS · 3-4-LF174A-75-FS
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
The WATTS 3/4 LF174A 75 FS is an ASME Section XIII hot water pressure relief valve with 3/4 in x 3/4 in FNPTF connections, made of copper silicon alloy, and rated for a maximum operating pressure of 150 psi (MPN 3/4 LF174A 75 FS).
Frequently Asked Questions
What is the Watts LF174A relief valve used for?
The Watts LF174A is an ASME Section XIII hot water pressure relief valve used in commercial and residential hydronic heating systems. It protects boilers and water heaters from overpressure by automatically discharging water when system pressure exceeds 150 psi, preventing equipment damage and ensuring safe operation.
What are the specifications of the Watts 3/4 LF174A 75 FS relief valve?
The Watts 3/4 LF174A 75 FS is a copper silicon alloy relief valve with 3/4 inch FNPTF female threaded connections on both inlet and outlet. It has a maximum operating pressure of 150 psi and is ASME Section XIII certified for hot water service. The manufacturer part number is 3/4 LF174A 75 FS.
Where to buy Watts relief valves worldwide?
3G Electric supplies Watts relief valves worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your site. Contact our team for pricing and lead time on the Watts LF174A or other ASME relief valves for your region.
How to install a Watts LF174A pressure relief valve?
Install the Watts LF174A in the hot water outlet line of the boiler or water heater, with the valve stem oriented vertically or within 45 degrees of vertical. Use pipe thread sealant on the FNPTF connections, ensure no shutoff valve is placed between the system and the relief valve, and route the discharge pipe to a safe drain location per local codes.
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Common applications for WattsWatts Products
3G Electric supplies Watts asme section xiii hot water pressure relief valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
